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ARM: tegra: migrate to new clock code

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Migrate Tegra clock support to drivers/clk/tegra, this involves
moving:
1. definition of tegra_cpu_car_ops to clk.c
2. definition of reset functions to clk-peripheral.c
3. change parent of cpu clock.
4. Remove legacy clock initialization.
5. Initialize clocks using DT.
6. Remove all instance of mach/clk.h

Signed-off-by: Prashant Gaikwad <[email protected]>
[swarren: use to_clk_periph_gate().]
Signed-off-by: Stephen Warren <[email protected]>
This commit is contained in:
Prashant Gaikwad 2013-01-11 13:16:26 +05:30 • committed by Stephen Warren
commit 61fd290d21
21 changed files with 73 additions and 142 deletions
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38
drivers/clk/tegra/clk-periph.c
View file

@ -110,6 +110,44 @@ static void clk_periph_disable(struct clk_hw *hw)
gate_ops->disable(gate_hw);
}
void tegra_periph_reset_deassert(struct clk *c)
{
struct clk_hw *hw = __clk_get_hw(c);
struct tegra_clk_periph *periph = to_clk_periph(hw);
struct tegra_clk_periph_gate *gate;
if (periph->magic != TEGRA_CLK_PERIPH_MAGIC) {
gate = to_clk_periph_gate(hw);
if (gate->magic != TEGRA_CLK_PERIPH_GATE_MAGIC) {
WARN_ON(1);
return;
}
} else {
gate = &periph->gate;
}
tegra_periph_reset(gate, 0);
}
void tegra_periph_reset_assert(struct clk *c)
{
struct clk_hw *hw = __clk_get_hw(c);
struct tegra_clk_periph *periph = to_clk_periph(hw);
struct tegra_clk_periph_gate *gate;
if (periph->magic != TEGRA_CLK_PERIPH_MAGIC) {
gate = to_clk_periph_gate(hw);
if (gate->magic != TEGRA_CLK_PERIPH_GATE_MAGIC) {
WARN_ON(1);
return;
}
} else {
gate = &periph->gate;
}
tegra_periph_reset(gate, 1);
}
const struct clk_ops tegra_clk_periph_ops = {
.get_parent = clk_periph_get_parent,
.set_parent = clk_periph_set_parent,

16
drivers/clk/tegra/clk.c
View file

@ -16,9 +16,14 @@
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/of.h>
#include <linux/clk/tegra.h>
#include "clk.h"
/* Global data of Tegra CPU CAR ops */
struct tegra_cpu_car_ops *tegra_cpu_car_ops;
void __init tegra_init_dup_clks(struct tegra_clk_duplicate *dup_list,
struct clk *clks[], int clk_max)
{
@ -67,3 +72,14 @@ void __init tegra_init_from_table(struct tegra_clk_init_table *tbl,
}
}
}
static const struct of_device_id tegra_dt_clk_match[] = {
{ .compatible = "nvidia,tegra20-car", .data = tegra20_clock_init },
{ .compatible = "nvidia,tegra30-car", .data = tegra30_clock_init },
{ }
};
void __init tegra_clocks_init(void)
{
of_clk_init(tegra_dt_clk_match);
}